To find out how sleep originated, Japanese and Korean researchers say that animals without a brain and brain can sleep without a brain, and that a living thing does not necessarily have to have a brain in order for it to sleep.
Some experts believe that if someone can not sleep, he will go crazy. But where does sleep come from? Can living things without a brain sleep? And in fact, first it is the brain and then the sleep system was created, or can you sleep without the brain and the nervous system? Researchers study the molecular and genetic properties of a living organism called hydra and say that sleep before the brain there have been.
There are many questions about the brain and how it relates to sleep. Adequate sleep can usually help the brain function better and more efficiently in humans. But the question is, do animals need to sleep too? And do we have to have a brain to be able to sleep?
Research shows that insomnia can affect the brain system and thought processes. An international team of researchers conducted an interesting study to understand the relationship between the brain and sleep and the origin of sleep in animals. In their study, they examined a small, water-dwelling organism called the hydra, which lacks a central nervous system and exhibits a state of sleep.
One of the researchers in this study says:
“We now have strong evidence that animals needed sleep before they needed a brain.”
The researchers observed similar behaviors in another creature called a jellyfish from a species near Hydra. In a new study, researchers at Kyushu University in Japan and the Ulsan National Institute of Science and Technology in Korea found that several chemicals cause drowsiness and drowsiness that have similar effects even in humans.
One researcher says:
“According to initial reports, the evolution of sleep in a jellyfish is independent of the evolution of the brain. There are still many unanswered questions about how and where sleep occurs in animals. “But studies on hydra show that this creature, which lacks a central nervous system, can show the mechanisms of sleep production.”
It is worth noting that the hydras are only two centimeters long and, as mentioned, lack a central nervous system and no central connection to the brain.
While sleep is often controlled by measuring and monitoring brain waves, this approach will not work for brainless organisms. As a result, the researchers used a video system to track movements to determine what Hydra looked like when it was asleep and when it was awake.
The researchers found that hydrates have a four-hour cycle of waking and sleeping states. Most importantly, the researchers found many similarities in sleep regulation at the molecular and genetic levels in these brainless organisms.
When Hydra was exposed to melatonin, a hypnotic adjuvant, sleep و increased its frequency and frequency on average. The same results were obtained with the GABA inhibitor neurotransmitter test, which is another chemical to increase sleep. The researchers also used dopamine to complete their tests, which stimulates sleep in many animals.